It’s amazing to me how easy it is to forget to move. This year was the first time in about five years that I found myself gaining weight. It wasn’t a lot, just five pounds over six months or so, but it was strange for me since I didn’t think I was doing anything different.

I write and think about healthy living all the time, and I absolutely love the food I eat. I no longer crave sugar, and avoiding it isn’t hard. If anything I have eaten healthier than ever during this time, since I started working at home and control 100% of my meals. I’ve been eating the same or better quality food than I always have, and have even improved on my mindful eating techniques.

What Gives?

I didn’t think the problem was exercise, since I still go to the gym 4-6 days a week. My workouts have actually gotten better, and I’ve noticed welcome improvements in several aspects of my physique (thank you kettlebell!). I wasn’t upset about how I looked, I had just gotten slightly larger and didn’t know why. Then about six weeks ago I figured it out: I had stopped walking.

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When I was still in my PhD program I had a substantial walk to work, at least a mile each way if I took the campus shuttle, and about 2.5 miles each way if I walked the whole distance (I did this rarely, but tried to squeeze it in when I could). I also worked in the lab, running back and forth between rooms and up and down stairs to get equipment. Though I came home each evening and worked on [my blog] Summer Tomato until the wee hours of the morning, I was not sedentary.

Even during my brief stint in the corporate world after graduation I had a walking commute to work. But after I quit in January I just stayed at home writing. At first I had a standing desk/table I was using, but logistics and a problematic elbow forced me to move to the coffee shop across the street where most of my work gets done now. This sedentary shift correlates exactly with when I noticed my pants getting tighter.

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What’s crazy to me is that this amount of exercise seems so inconsequential it doesn’t even register in my brain until months after the change has occurred (did I mention I was still working out almost every day?). And it's not like I never think about this stuff, I noticed when I first started walking that I effortlessly dropped weight. How could I forget that non-exercise activity (NEAT) is so important?

It’s easy to forget, but this is good news. It means that it is not a chore to burn more calories—in fact, you'll hardly notice. All you need to do is make an effort to be a little more active throughout the day, and work to build more activity into your daily routine.

Get Moving

To solve my problem, I turned to my puppy Toaster. He needs to get out and walk a few times a day, so I thought why not improve both of our lives by making a daily pilgrimage to the bigger, better park that’s about a mile from the house instead of the smaller, dirtier park that is closer and more convenient? He gets more exercise and behaves better, I get my walk in, and we both have more fun. Win-win. I’m happy to report that my pants are fitting better again and I’m back down to my normal weight.

If you don’t have a dog, there are plenty of other ways to move more. Avoid elevators and escalators, walk to lunch or between floors in your building, do chores more enthusiastically at home, and park further away in the parking lot. Just standing up more can make a difference. These things add minuscule amounts of time to your tasks but add up significantly for your health.

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Unlike structured, high-intensity exercise, walking and other low-intensity movements don’t make you hungrier. There’s good evidence that increasing your daily activity can burn hundreds of extra calories each day and may be one of the most effective ways to impact your energy balance (i.e. burn more without eating more). This is not true of more formal exercise, which tends to make people hungrier. Importantly, non-exercise activity correlates with body weight in obese as well as normal weight individuals, so everyone can benefit from extra movement.

Even if you already work out regularly you should still strive for additional daily activity. Amazingly, high-intensity exercise doesn’t lower your inclination toward NEAT, but raises it. In one study, scientists measured NEAT three days before and three days after overweight individuals performed either moderate or high-intensity exercise. There was no measurable change in NEAT until the third day after exercise, when it increased 17% after moderate activity and 25% after intense activity. That’s impressive.

When you’re as busy as I am, it’s easy to make excuses about why extra effort is impossible. But adding a little extra movement to your normal, daily activities is far and away the easiest way to lose weight and improve your health, so why not?

I’ve also found a substantial meditative value in incorporating more physical activity. Several of my most complex problems have been solved during my walks and I’ve been plowing through podcasts and audiobooks, which I swear makes me smarter (I’m currently loving The Assault on Reason, by Al Gore). Your brain truly appreciates a break from the screen. Ironically, it took noticing that I was “reading” less to make me examine what was different in my life—I realized I was listening to fewer audiobooks because I was walking less, and put 2 and 2 together. Problem solved.

It’s easy to be lazy and just wait for the elevator with everyone else, even though you know the time it saves you is insignificant. But today I hope I’ve convinced you that it’s worth resisting that urge and making an effort to be more active. Try making it a game or competing with your friends using pedometers like the FitBit for extra motivation.